Search machine with dynamically updated flag on graphical slider

ABSTRACT

Example embodiments described herein disclose a travel search machine configured to retrieve and present search results as graphical elements within a graphical user interface. The travel search machine presents graphical elements with a slider configured to define a subset of the search results, where the subset is defined by a location of the slider among the graphical elements within the graphical user interface, and is further configured to receive a user input that moves the slider from a first location in the graphical user interface to a second location in the graphical user interface and in response to the first user input, cause the user device to display a notification window in the graphical user interface at a position relative to the slider in the first location, the notification window indicating a count of search results within the subset of search results defined by the location of the slider.

TECHNICAL FIELD

The subject matter disclosed herein generally relates to machinesconfigured for processing data. Specifically, the present disclosureaddresses machines and methods that facilitate presenting search resultsin a graphical user interface.

BACKGROUND

Websites have enabled users to search for a variety of products andservices. Some allow a user to purchase or reserve a product or serviceselected by the user. More specifically, in the travel industry, anumber of websites exist for a user to search for and make reservationsand bookings of one or more travel options, such as airline flights andhotel stays. To book flights, for example, an airline may have a websitethat a user can use to search for fares and purchase tickets.Concurrently, online travel agents exist which combine travel optionsfrom several airlines, giving the user a greater selection than may beobtained from a single airline.

A user may operate a machine (e.g., a device) to execute a search of oneor more databases and obtain corresponding search results from theexecuted search. For example, a travel website may operate a machine(e.g., a travel search machine) that provides one or more travel searchservices to one or more devices belonging to one or more users. Thetravel search machine may be configured (e.g., by suitable softwareexecuting on a processor of the travel search machine) to receive asearch request containing search criteria, and retrieve search resultsfrom a database, and cause a device of a user to display a presentationof search results.

BRIEF DESCRIPTION OF THE DRAWINGS

Some embodiments are illustrated by way of example and not limitation inthe figures of the accompanying drawings.

FIG. 1 is a network diagram illustrating a network environment suitablefor presenting and sharing search results as trip objects, according tosome example embodiments.

FIG. 2 is a block diagram illustrating components of a travel searchmachine suitable for generating and presenting a dynamically updatedheader flag, according to some example embodiments.

FIG. 3 is a flowchart illustrating operations of the travel searchmachine in performing a method of generating and presenting adynamically updated header flag, according to some example embodiments.

FIG. 4 is a flowchart illustrating operations of the travel searchmachine in performing a method of retrieving and presenting searchresults as a set of graphical elements within a graphical userinterface, according to some example embodiments.

FIG. 5 is a flowchart illustrating operations of the travel searchmachine in performing a method of causing the presentation of anotification window, according to some example embodiments.

FIG. 6 is a diagram illustrating a search result presentation interfaceincluding one or more search results as graphical elements, and a sliderwithin a graphical user interface, according to some exampleembodiments.

FIG. 7 is a diagram illustrating a search result presentation interfaceincluding one or more search results as graphical icons, a slider, and adynamically updated header flag within a graphical user interface,according to some example embodiments.

FIG. 8 is a diagram illustrating a search result presentation interfaceincluding one or more search results as graphical icons, a slider, and adynamically updated header flag within a graphical user interface,according to some example embodiments.

FIG. 9 is a diagram illustrating a search result presentation interfaceincluding one or more search results as graphical icons, and a slider,according to some example embodiments.

FIG. 10 is a diagram illustrating a search result presentation interfaceincluding a slider and a dynamically updated header flag indicating thatthere are no search results remaining within a graphical user interface

FIG. 11 is a block diagram illustrating components of a machine,according to some example embodiments, able to read instructions from amachine-readable medium and perform any one or more of the methodologiesdiscussed herein.

DETAILED DESCRIPTION

Example embodiments described herein disclose a travel search machine(e.g., in an online search environment), configured to retrieve andpresent search results as graphical elements within a graphical userinterface. The travel search machine may be or include a group of one ormore server machines configured to provide one or more search engineservices. A user device may accordingly request and receive, from thetravel search machine, a set of one or more search results based on asubmitted search criteria. The travel search machine may then cause theuser device to present at least some of the received search resultswithin a graphical user interface, and in some example embodiments, mayfurther facilitate the sharing of the received search results with oneor more additional users. Examples merely typify possible variations.Unless explicitly stated otherwise, components and functions areoptional and may be combined or subdivided, and operations may vary insequence or be combined or subdivided. In the following description, forpurposes of explanation, numerous specific details are set forth toprovide a thorough understanding of example embodiments. It will beevident to one skilled in the art, however, that the present subjectmatter may be practiced without these specific details.

The travel search machine is configured (e.g., by one or more suitablemodules that include one or more processors) to retrieve and presentsearch results (e.g., airline flights) as graphical elements in agraphical user interface. Graphical elements are those elements used bya graphical user interface to offer consistent visual representations ofdata objects displayed within the graphical user interface. The travelsearch machine presents the graphical elements with a slider configuredto define (e.g., fully or at least partially) a subset of the searchresults, where the subset is defined (e.g., in whole or at least inpart) by a location of the slider among the graphical elements withinthe graphical user interface. A graphical element can be a shape (e.g.,a rectangle or oval), an icon, a bar, or a combination thereof.

In some example embodiments, the travel search machine presents thesearch results along an axis within the graphical user interface, wherethe axis represents a parameter of the search results (e.g., departuretime, arrival time). For example, the travel search machine may presentthe search results as graphical elements along the axis, arranging thegraphical elements from an earliest departure or arrival time, to alatest departure or arrival time. The travel search machine displays theslider intersecting the axis at a location among the search results,where the location of the slider defines a threshold value of theparameter (e.g., departure time, arrival time) represented by the axis.

According to various example embodiments, the travel search machine isconfigured to receive a user input that moves the slider from a firstlocation in the graphical user interface to a second location in thegraphical user interface. For example, a user may initiate movement ofthe slider by a first user input that selects the slider (e.g., via acursor, or on a touch enabled device), via a user device on which thetravel search machine causes the graphical user interface to bedisplayed. In response to the first user input, the travel searchmachine causes the user device to display a notification window in thegraphical user interface and at a position relative to the slider in thefirst location. In some example embodiments, the travel search machinemaintains the position of the notification window relative to the sliderat the second location of the slider within the graphical userinterface. The notification window displays a count of search results inthe subset (e.g., a first subset) of the search results, and the subsetmay be at least partially defined by the location (e.g., the firstlocation) of the slider. The user may conclude the movement of theslider via a termination of the first user input (e.g., a drag input)moving the slider to a subsequent location (e.g., a second location)within the graphical user interface. The termination of the first userinput causes the notification window to update and display a count ofsearch results within the subset (e.g., the second subset) defined bythe subsequent location of the slider (e.g., the second location) in thegraphical user interface. Thus, as the user drags the slider from afirst location in the graphical user interface to a subsequent location,the notification window updates (e.g., continually and dynamically) todisplay a count of search results within the subset defined by thelocation of the slider at any given time. When the count of searchresults in the subset defined by the location of the slider is zero, thenotification window may display a phrase indicating that there are nosearch results to be shown (e.g., “No flights left!”).

In some example embodiments, the search results include a set ofparameters (e.g., prices, flight duration, or number of connections)with corresponding values (e.g., a price in dollars or a flight durationin hours). The notification window may display a value of a parameterfrom the parameters of the search results within a subset defined by thelocation of the slider, in addition to the count of search results inthe subset. For example, in response to receiving the first user inputinitiating the movement of the slider, the travel search machine maycause the notification window to appear and to display the count of thesearch results within the subset defined by the first location of theslider, as well as a lowest price value from the set of price valuescorresponding to the search results within the first subset. Thus, asdescribed above, as the user drags the slider from the first location toa subsequent location, the notification window dynamically updates todisplay a count of search results and a lowest price corresponding tothe search results within the subset of search results defined by thelocation of the slider in the graphical user interface.

As an illustrative example from a user perspective, suppose a user namedDale launches a mobile app on his smartphone, and the mobile app allowsDale to access the travel search machine in order to search for flightoptions. Dale may first provide the travel search machine with searchcriteria that specify parameters of his desired flight, such as traveldates, a departure airport, and an arrival airport. The travel searchmachine retrieves and presents a set of search results (e.g., retrievedbased on at least the search criteria) as graphical elements (e.g.,icons or shapes) along the axis within the graphical user interface. Theaxis represents a departure time of the flights.

Dale may then move the slider from the first position in the graphicaluser interface (e.g., the position in which the slider was initiallydisplayed) to a second position along the axis, to define an earliestdeparture time. The position of the slider in relation to the graphicalelements at least partially defines a subset of the search results(e.g., search results with departure times later than a time specifiedby the slider). Dale may initiate movement of the slider by, forexample, selecting the slider with a user input via a cursor. When Daleselects the slider to initiate the movement, the notification windowappears as a header flag above the slider, and the notification windowdisplays the set of search results within the subset of search resultsat least partially defined by the location of the slider. For example,if the slider is at a position on the axis corresponding to an 8:00 amearliest departure time, only flights with an 8:00 am or later departuretime will be displayed. The header flag will then display a count ofsearch results having an 8:00 am or later departure time, as well as alowest price among the subset of search results. As Dale moves theslider along the axis, the header flag appears to dynamically updateitself to include a count of search results in the subset defined by thelocation of the slider, and a lowest price within the subset. Thus, asDale narrows the range of acceptable departure times, fewer and fewersearch results will remain within the subset defined by the location ofthe slider, and the header flag will appear to update itselfaccordingly. Once Dale decides on a preferred earliest departure time,he can place the slider at a corresponding location by releasing theslider. The travel search machine will then cause the header flag todisappear. In this way, Dale is able to see how many search resultsremain in real time as he varies the departure time, in addition to alowest price among the available results in the subset defined by thelocation of the slider. Dale can apply this same method to setting athreshold value for the corresponding arrival times.

FIG. 1 is a network diagram illustrating a network environment 100suitable for operating a travel search machine 110, according to someexample embodiments. The network environment 100 includes the travelsearch machine 110, a database 115, a third-party data source 120, andclient devices 130 and 140, operated by a user 150 (e.g., Dale) allcommunicatively coupled to each other via a network 190. The travelsearch machine 110, with or without the database 115, may form all orpart of a search engine 118 (e.g., a travel search engine, a hotelsearch engine, a shopping search engine, a news search engine, or anysuitable combination thereof). In addition, the search engine 118 mayform all or part of a network-based system 105 (e.g., a cloud-basedserver system configured to provide one or more services, such as searchengine services, to the client devices 130 and 140). The third-partydata source 120 may be or include a database (e.g., similar to database115). In some example embodiments, the third-party data source 120 is aweb server machine operated by a third-party (e.g., a business entitydistinct from the business entity that operates the travel searchmachine 110). The travel search machine 110, the database 115, thethird-party data source 120, and the client devices 130 and 140 may eachbe implemented in a computer system, in whole or in part, as describedbelow with respect to FIG. 11.

Any of the machines, databases, or devices shown in FIG. 1 may beimplemented in a special-purpose computer that has been modified (e.g.,configured or programmed) by software (e.g., one or more softwaremodules) to perform one or more of the functions described herein forthat machine, database, or device. For example, a computer system ableto implement any one or more of the methodologies described herein isdiscussed below with respect to FIG. 11. As used herein, a “database” isa data storage resource and may store data structured as a text file, atable, a spreadsheet, a relational database (e.g., an object-relationaldatabase), a triple store, a hierarchical data store, or any suitablecombination thereof. Moreover, any two or more of the machines,databases, or devices illustrated in FIG. 1 may be combined into asingle machine, and the functions described herein for any singlemachine, database, or device may be subdivided among multiple machines,databases, or devices.

The network 190 may be any network that enables communication between oramong machines, databases, and devices (e.g., the message machine 110and the device 130). Accordingly, the network 190 may be a wirednetwork, a wireless network (e.g., a mobile or cellular network), or anysuitable combination thereof. The network 190 may include one or moreportions that constitute a private network, a public network (e.g., theInternet), or any suitable combination thereof. Accordingly, the network190 may include one or more portions that incorporate a local areanetwork (LAN), a wide area network (WAN), the Internet, a mobiletelephone network (e.g., a cellular network), a wired telephone network(e.g., a plain old telephone system (POTS) network), a wireless datanetwork (e.g., WiFi network or WiMax network), or any suitablecombination thereof. Any one or more portions of the network 190 maycommunicate information via a transmission medium. As used herein,“transmission medium” refers to any intangible (e.g., transitory) mediumthat is capable of communicating (e.g., transmitting) instructions forexecution by a machine (e.g., by one or more processors of such amachine), and includes digital or analog communication signals or otherintangible media to facilitate communication of such software.

FIG. 2 is a block diagram illustrating components of the travel searchmachine 110 that configure the travel search machine 110 to generate andpresent a dynamically updated header flag, according to some exampleembodiments. The travel search machine 110 is shown as including aslider module 202, a search module 204, and a presentation module 206,all configured to communicate with each other (e.g., via a bus, sharedmemory, or a switch). Any one or more of these modules may beimplemented using one or more processors 208 and hence may include oneor more of the processors 208 (e.g., by configuring such one or moreprocessors to perform functions described for that module).

Any one or more of the modules described may be implemented usinghardware alone (e.g., one or more of the processors 208 of a machine) ora combination of hardware and software. For example, any moduledescribed of the travel search machine 110 may physically include anarrangement of one or more of the processors 208 (e.g., a subset of oramong the one or more processors of the machine) configured to performthe operations described herein for that module. As another example, anymodule of the travel search machine 110 may include software, hardware,or both, that configure an arrangement of one or more processors 208(e.g., among the one or more processors of the machine) to perform theoperations described herein for that module. Accordingly, differentmodules of the travel search machine 110 may include and configuredifferent arrangements of such processors 208 or a single arrangement ofsuch processors 208 as different points in time. Moreover, any two ormore modules of the travel search machine 110 may be combined into asingle module, and the functions described herein for a single modulemay be subdivided among multiple modules. Furthermore, according tovarious example embodiments, modules described herein as beingimplemented within a single machine, database, or device may bedistributed across multiple machines, databases, or devices.

FIG. 3 is a flowchart illustrating operations of the travel searchmachine 110 in performing a method 300 of generating and presenting adynamically updated header flag, according to some example embodiments.Operations of the method 300 may be performed by the modules describedabove with respect to FIG. 2. As shown in FIG. 3, the method 300 mayinclude operations 302, 304, 306, 308, 310 and 312.

In operation 302, the search module 204 receives one or more searchcriteria submitted by the user (e.g., the user 150). The search module204 may then retrieve and present a set of search results based on atleast some of the search criteria submitted by the user. This may beperformed by searching the database 115 for the search results (e.g., aparticular airline flight, or accommodations), selecting the searchresults based on at least some of the search criteria submitted by theuser, and retrieving and providing the search results to client device130 via presentation module 206. The presentation module 206 may presentthe search results along an axis within the graphical user interface,where the axis represents a parameter of the search results (e.g.,departure time, or arrival time).

In some example embodiments, the one or more search criteria may be orinclude a keyword submitted by the user as a text based search in asearch field within the trip creation interface. In other exampleembodiments, search criteria may be retrieved through geolocation of theclient device 130, predefined preferences set by the user via clientdevice 130, or as a selection made by the user from selectable searchcriteria options presented in a search criteria menu (e.g., a selectablelist of: airlines, departure cities, arrival cities, departure times,arrival times, or price options) presented in a graphical userinterface.

In operation 304, the slider module 202 generates and displays a sliderintersecting the axis at a location in the graphical user interface,where the location of the slider in the graphical user interface definesa threshold value of a subset of the graphical elements (e.g., searchresults), and where the subset of search results may include all or someof the set of search results retrieved based on at least the searchcriteria and the threshold value. The slider is represented as a linesegment having an end, and in some example embodiments, the slidermodule 202 is configured to receive a user input via the line segment,where the user input initiates the movement of the slider from a firstlocation in the graphical user interface to a subsequent location in thegraphical user interface.

In operation 306, the slider module 202 detects a user input initiatingthe movement of the slider away from a first location in the graphicaluser interface to a subsequent location in the graphical user interface.As discussed with reference to operation 304, in some exampleembodiments the slider module 202 is configured to receive a user inputvia the slider. The user input initiating the movement of the slider mayinclude a selection of the slider by a cursor controlled via clientdevice 130. For example, the user may select the slider by positioningthe cursor at a position on the slider via a mouse (e.g., input/outputdevice 1112) of the client device 130, and depressing a button of themouse. In alternative embodiments, if the user is viewing the searchresults on a touch enabled device, the user may select the sliderthrough a tactile input on the touch enabled device by placing a fingerdirectly onto the slider on the graphical user interface.

In operation 308, responsive to detecting the user input initiating themovement of the slider, the presentation module 206 causes display of anotification window indicating a first quantity of search results withinthe subset of the search results defined by the location of the sliderin the graphical user interface. In some example embodiments, thepresentation module 206 causes the display of the notification window asa header flag which appears at a position relative to the slider in thegraphical user interface, and where the header flag maintains the samerelative position to the slider in the graphical user interface as theslider moves to a subsequent location. For example, responsive toreceiving the user input initiating the movement of the slider, thepresentation module 206 may cause the header flag to appear at alocation contiguous to the slider. As the user moves the slider from thefirst location to the subsequent location, the header flag maintains thesame contiguous location to the slider.

The presentation module 206 is further configured to cause the headerflag to indicate a quantity of search results corresponding to thesubset of search results defined by at least the location of the sliderand the threshold value defined by the location of the slider in thegraphical user interface. For example, the subset of search results mayinclude all or some of the search results, and where the quantity ofsearch results is represented by a numerical value. Thus, responsive toreceiving the user input initiating the movement of the slider from thefirst location in the graphical user interface, the presentation module206 causes the header flag to appear and indicate the quantity of searchresults in the subset defined by the threshold value defined by thefirst location of the slider. The quantity of search results may berepresented as a natural number (e.g., 1, 2, 3, etc.).

In operation 310, the slider module 202 detects a conclusion of themovement of the slider from the first location to a second location(e.g., the subsequent location) in the graphical user interface. Theuser concludes the movement of the slider by placing the slider at thesubsequent location within the graphical user interface.

In operation 312, responsive to detecting the conclusion of the movementat the second location in the graphical user interface, the slidermodule 202 causes the header flag (e.g., notification window) toindicate a second quantity of search results (e.g., a second quantity ofsearch results) within the second subset of the search results definedby the subsequent location (e.g., the second location) of the sliderwithin the graphical user interface. In this way, the notificationwindow is dynamically updated, in real-time, to display a count ofsearch results corresponding to the subset defined by the searchcriteria and the threshold value defined by the location of the sliderin the graphical user interface.

As shown in FIG. 4, one or more operations 402, 404, 406, and 408 may beperformed as part (e.g., a precursor task, a subroutine, or portion) ofoperation 302 of method 300, in which the search module 204 retrievesand presents search results as a set of graphical elements within agraphical user interface, according to some example embodiments.

Operation 402 may be performed by the search module 204, with respect tothe client device 130. For example, a user accessing the travel searchmachine 110 is presented with a search criteria input field by thesearch module 204, within the graphical user interface. The searchcriteria input field may include a text field, as well as a menu of oneor more selectable search criteria. In some embodiments, the travelsearch machine 110 is configured to receive search criteria as a textinput from client device 130, or as a spoken submission. In otherembodiments, the user may opt to select search criteria from among alist of search criteria presented in a search menu within the graphicaluser interface.

In operation 404, the search module 204 retrieves a set of searchresults, where the set of search results are representable by a set ofgraphical elements (e.g., icons, shapes) based on at least the searchcriteria. The search results may include, for example, be one or moreflight options representable as graphical elements.

In operation 406, the presentation module 206 displays an axisintersected by a slider in the graphical user interface. The axis mayrepresent a parameter of the search results, and include an arrangementof values corresponding to the parameter. For example, the searchresults may include corresponding arrival or departure times, and theaxis may include an arrangement of arrival or departure times.Furthermore, in some example embodiments, the slider and the axis mayintersect at a point of intersection, where the point of intersectiondefines a threshold value of the parameter represented by the axis.

In operation 408, the presentation module 206 arranges the graphicalelements (e.g., the search results) in the graphical user interfacealong the axis. In some example embodiments, the presentation module 206is configured to arrange the graphical elements according to theparameter values included in the axis. For example, the presentationmodule 206 may arrange the graphical elements in locations parallel tothe axis on the graphical user interface, such that the parameter valuesof the axis define the locations of the search results represented bythe graphical elements, based on the corresponding parameter values ofthe search results.

In FIG. 5, one or more operations 502, 504, 506, and 508 may beperformed as part (e.g., a precursor task, a subroutine, or portion) ofthe method 300, in which the presentation module 206 generates andpresents a dynamically updated header flag, according to some exampleembodiments.

Operation 502 may be performed by the slider module 202, with respect toclient device 130, as part (e.g., a precursor task, a subroutine, orportion) of operation 306. As discussed in operation 306 of method 300,the slider module 202 detects a user input initiating the movement ofthe slider away from a first location in the graphical user interface.At operation 502, the slider module 202 receives the first input, wherethe first input selects the slider. In some example embodiments, theslider may be selected by positioning a cursor controlled by a mouse(e.g., input/output device 1112) of a client device 130 at a location onthe slider, and depressing a button of the mouse. In embodiments wherethe client device 130 is a touch enabled device, the slider may beselected through a tactile input received from the user.

Operation 504 may be performed by the presentation module 206, withrespect to client device 130, as part (e.g., a precursor task, asubroutine, or portion) of operation 308. As discussed at operation 308,responsive to detecting the first input, the presentation module 206causes display of a notification window indicating a first quantity ofsearch results within the subset of the search results defined by thelocation of the slider in the graphical user interface. At operation504, responsive to the selection of the slider, the presentation module206 is configured to cause the notification window (e.g., the headerflag) to appear (e.g., materialize, become visible) at a position in thegraphical user interface relative to the slider, such that the headerflag maintains the relative position to the slider as the slider ismoved to the subsequent location in the graphical user interface.

Operation 506 may be performed by the slider module 202, with respect toclient device 130. At operation 506, the slider module 202 receives asecond input from the user device placing the slider at the subsequentlocation (e.g., the second location) within the graphical userinterface. The second input finalizes the subsequent location of theslider as the second location of the slider. For example, as discussedwith respect to the first user input selecting the slider above, theslider may be selected by positioning the cursor over the slider withthe mouse of the client device 130, and depressing the mouse button ofthe mouse, which may then enable the user to drag the slider to thesubsequent location. Once the user has identified a location (e.g., thesecond location) within the graphical user interface to place theslider, the user may finalize the location of the slider by the secondinput, where the second input may include releasing the mouse button,placing the slider at the subsequent location.

Operation 508 may be performed by the presentation module 206, withrespect to client device 130. At operation 508, responsive to placingthe slider at the second location, the presentation module 206 causesthe header flag to disappear (e.g., become invisible, fade away) fromthe graphical user interface.

FIG. 6 is a diagram of a graphical user interface 600 (e.g., searchpresentation interface) to display the presentation of search results onclient device 130, having a slider 602, intersecting an axis 604 at afirst location 618, and search results represented as graphical elements606, 608, 610, 612, 614, and 616. The search presentation interface 600may be configured as an interactive webpage or an interactiveapplication screen (e.g., of the travel search machine 110) that allowsa user 150 to view search results represented as graphical elements(e.g., 606, 608, 610, 612, 614, and 616).

The slider 602 is shown as a line segment having a display at a firstend, where the display indicates a value of the parameter at the firstlocation 618 of the axis. For example, as shown in FIG. 6, the point ofintersection (e.g., the first location 618) of the slider 602 and theaxis 604 represents a time (e.g., 1:55 am). As the user moves the slider602 along the axis 604, the display varies/updates to indicate the valuecorresponding to the point of intersection of the slider 602 with theaxis 604.

The slider 604 includes an arrangement of values corresponding to aparameter of the search results. As shown in FIG. 6, the axis 604represents a time or date corresponding to the search results, such thatthe search results may be arranged in the graphical user interface atlocations corresponding to the values indicated on the axis 604. Thus,the graphical elements 606, 608, 610, 612, and 614 are shown atlocations in the graphical user interface relative to the values as theyare arranged on the axis 604.

FIG. 7 is a diagram illustrating a first user input initiating themovement of the slider 602 within the search presentation interface 600,including the slider 602, the axis 604, the search results representedas graphical elements 606, 608, 610, 612, 614, and 616, a notificationwindow depicted as a header flag 702, and a cursor 704. As describedrelative to FIG. 6, the slider 602 is depicted at a location (e.g., thefirst location 618) in the graphical user interface (e.g., the searchpresentation interface 600) intersecting the axis 604, where the pointof intersection defines a threshold value of the parameter representedby the axis 604.

FIG. 7 depicts a first user input initiating movement of the slider 602,by selecting the slider 602 with cursor 704. The cursor 704 may becontrolled by a mouse or trackpad of client device 130. The user mayinitiate movement of the slider 602 by positioning the cursor 704 at aposition on the slider 602, and depressing a mouse button. Responsive toreceiving the first user input initiating movement of the slider 602,the presentation module 206 causes the presentation of the notificationwindow as a header flag 702, at a location relative to the slider 602,such that the header flag 702 maintains the same relative position tothe slider 602 as the slider 602 moves to a subsequent location in thesearch presentation interface 600.

As shown in FIG. 7, the header flag 702 indicates a numerical quantityof search results describing the quantity of search results included ina subset of search results defined by the location (e.g., the firstlocation 618) of the slider 602 in the search presentation interface600. For example, as show in FIG. 7, the header flag 702 indicates thatthere are twenty one search results within the subset of search resultsdefined by the location of the slider 602 in the search presentationinterface 600. In addition, the header flag 702 also indicates a valueof a parameter of the search results. Here, header flag 702 indicatesthat the lowest priced search result in the subset of search results is$1,179. Thus, a user is provided with a quantity and a parameter valuecorresponding to the search results in real-time.

As in FIG. 7, the slider 602 of FIG. 8 is shown receiving a user inputvia the cursor 704 moving the slider 602 from the first location 618 inthe search presentation interface 600 to a subsequent location. Arrow706 indicates a direction of movement of the slider in the graphicaluser interface. As the user moves the slider 602 to the subsequentlocation in the search presentation interface 600, the graphical userinterface updates to display a second subset of search results, wherethe second subset of search results includes a different set of searchresults from the first subset of search results, and the header flag 702updates to indicate a count and a minimum price value corresponding tothe subset defined by the location of the slider 602, in real-time. Asseen in FIG. 8, graphical element 612 of FIGS. 6 and 7 is no longerincluded in the subset of search results displayed in the graphical userinterface. For example, as depicted in FIG. 8, as the slider 602 movesto the subsequent location, the count of search results is reduced fromtwenty one, as shown in FIG. 7, to twenty. As shown in FIG. 8, thesearch presentation interface 600 only shows search results includedwithin the subset defined by the location of the slider 602.

FIG. 9 is a diagram illustrating the search result presentationinterface 600, with the slider 602 at a subsequent location (e.g., asecond location 900) in the search result presentation interface 600,and a second subset of search results, including graphical elements 606,608, 610, 614, and 616. As shown in FIG. 9, having placed the slider 602at the second location 900, indicating a conclusion to the movement ofthe slider 602, the presentation module 206 causes the header flag 702(e.g., of FIG. 7 and FIG. 8) to disappear from the search resultpresentation interface 600.

FIG. 10 is a diagram of the search result presentation interface 600, ina scenario where the user has moved the slider 602 in the same directionas in FIG. 8, represented by arrow 706, to a subsequent location 1000 inthe search result presentation interface 600, such that the subsequentlocation 1000 defines a subset of the search results with a count ofzero. As illustrated in FIG. 10, responsive to determining that thesubset defined by the location of the slider has no search results, thepresentation module 206 causes display of a header flag 1002, where theheader flag 1002 includes a text notification indicating that there areno search results remaining (e.g., “No flights left!”). In some exampleembodiments the presentation module 206 may also indicate that the countof the search results is zero by depicting the header flag 1002 in adifferent color than usual (e.g., red, or black), or by causing thepresentation of an auditory tone, to alert the user that there are nosearch results remaining to display.

FIG. 11 is a block diagram illustrating components of a machine 1100,according to some example embodiments, able to read instructions 1124from a machine-readable medium 1122 (e.g., a non-transitorymachine-readable medium, a machine-readable storage medium, acomputer-readable storage medium, or any suitable combination thereof)and perform any one or more of the methodologies discussed herein, inwhole or in part. Specifically, FIG. 11 shows the machine 1100 in theexample form of a computer system (e.g., a computer) within which theinstructions 1124 (e.g., software, a program, an application, an applet,an app, or other executable code) for causing the machine 1100 toperform any one or more of the methodologies discussed herein may beexecuted, in whole or in part.

In alternative embodiments, the machine 1100 operates as a standalonedevice or may be communicatively coupled (e.g., networked) to othermachines. In a networked deployment, the machine 1100 may operate in thecapacity of a server machine or a client machine in a server-clientnetwork environment, or as a peer machine in a distributed (e.g.,peer-to-peer) network environment. The machine 1100 may be a servercomputer, a client computer, a PC, a tablet computer, a laptop computer,a netbook, a cellular telephone, a smartphone, a set-top box (STB), apersonal digital assistant (PDA), a web appliance, a network router, anetwork switch, a network bridge, or any machine capable of executingthe instructions 1124, sequentially or otherwise, that specify actionsto be taken by that machine. Further, while only a single machine isillustrated, the term “machine” shall also be taken to include anycollection of machines that individually or jointly execute theinstructions 1124 to perform all or part of any one or more of themethodologies discussed herein.

The machine 1100 includes a processor 1102 (e.g., a central processingunit (CPU), a graphics processing unit (GPU), a digital signal processor(DSP), an application specific integrated circuit (ASIC), aradio-frequency integrated circuit (RFIC), or any suitable combinationthereof), a main memory 1104, and a static memory 1106, which areconfigured to communicate with each other via a bus 1108. The processor1102 may contain solid-state digital microcircuits (e.g., electronic,optical, or both) that are configurable, temporarily or permanently, bysome or all of the instructions 1124 such that the processor 1102 isconfigurable to perform any one or more of the methodologies describedherein, in whole or in part. For example, a set of one or moremicrocircuits of the processor 1102 may be configurable to execute oneor more modules (e.g., software modules) described herein. In someexample embodiments, the processor 1102 is a multicore CPU (e.g., adual-core CPU, a quad-core CPU, or a 128-core CPU) within which each ofmultiple cores is a separate processor that is able to perform any oneor more of the methodologies discussed herein, in whole or in part.Although the beneficial effects described herein may be provided by themachine 1100 with at least the processor 1102, these same effects may beprovided by a different kind of machine that contains no processors(e.g., a purely mechanical system, a purely hydraulic system, or ahybrid mechanical-hydraulic system), if such a processor-less machine isconfigured to perform one or more of the methodologies described herein.

The machine 1100 may further include a graphics display 1110 (e.g., aplasma display panel (PDP), a light emitting diode (LED) display, aliquid crystal display (LCD), a projector, a cathode ray tube (CRT), orany other display capable of displaying graphics or video). The machine1100 may also include an input/output device 1112 (e.g., a keyboard orkeypad, mouse, trackpad), a location component 1114 (e.g., a globalpositioning system (GPS) receiver), a storage unit 1116, an audiogeneration device 1118 (e.g., a sound card, an amplifier, a speaker, aheadphone jack, or any suitable combination thereof), and a networkinterface device 1120.

The storage unit 1116 includes the machine-readable medium 1122 (e.g., atangible and non-transitory machine-readable storage medium) on whichare stored the instructions 1124 embodying any one or more of themethodologies or functions described herein. The instructions 1124 mayalso reside, completely or at least partially, within the main memory1104, within the processor 1102 (e.g., within the processor's cachememory), or both, before or during execution thereof by the machine1100. Accordingly, the main memory 1104 and the processor 1102 may beconsidered machine-readable media (e.g., tangible and non-transitorymachine-readable media). The instructions 1124 may be transmitted orreceived over the network 190 via the network interface device 1120. Forexample, the network interface device 1120 may communicate theinstructions 1124 using any one or more transfer protocols (e.g.,hypertext transfer protocol (HTTP)).

As used herein, the term “memory” refers to a machine-readable mediumable to store data temporarily or permanently and may be taken toinclude, but not be limited to, random-access memory (RAM), read-onlymemory (ROM), buffer memory, flash memory, and cache memory. While themachine-readable medium 1122 is shown in an example embodiment to be asingle medium, the term “machine-readable medium” should be taken toinclude a single medium or multiple media (e.g., a centralized ordistributed database, or associated caches and servers) able to storeinstructions. The term “machine-readable medium” shall also be taken toinclude any medium, or combination of multiple media, that is capable ofstoring the instructions 1124 for execution by the machine 1100, suchthat the instructions 1124, when executed by one or more processors ofthe machine 1100 (e.g., processor 1102), cause the machine 1100 toperform any one or more of the methodologies described herein, in wholeor in part. Accordingly, a “machine-readable medium” refers to a singlestorage apparatus or device, as well as cloud-based storage systems orstorage networks that include multiple storage apparatus or devices. Theterm “machine-readable medium” shall accordingly be taken to include,but not be limited to, one or more tangible and non-transitory datarepositories (e.g., data volumes) in the example form of a solid-statememory Dale, an optical disc, a magnetic disc, or any suitablecombination thereof. A “non-transitory” machine-readable medium, as usedherein, specifically does not include propagating signals per se. Insome example embodiments, the instructions 1124 for execution by themachine 1100 may be communicated by a carrier medium. Examples of such acarrier medium include a storage medium (e.g., a non-transitorymachine-readable storage medium, such as a solid-state memory, beingphysically moved from one place to another place) and a transient medium(e.g., a propagating signal that communicates the instructions 1124).

Certain embodiments are described herein as including logic or a numberof components, modules, or mechanisms. Modules may constitute softwaremodules (e.g., code stored or otherwise embodied on a machine-readablemedium or in a transmission medium), hardware modules, or any suitablecombination thereof. A “hardware module” is a tangible (e.g.,non-transitory) unit capable of performing certain operations and may beconfigured or arranged in a certain physical manner. In various exampleembodiments, one or more computer systems (e.g., a standalone computersystem, a client computer system, or a server computer system) or one ormore hardware modules of a computer system (e.g., a processor or a groupof processors) may be configured by software (e.g., an application orapplication portion) as a hardware module that operates to performcertain operations as described herein.

In some embodiments, a hardware module may be implemented mechanically,electronically, or any suitable combination thereof. For example, ahardware module may include dedicated circuitry or logic that ispermanently configured to perform certain operations. For example, ahardware module may be a special-purpose processor, such as a fieldprogrammable gate array (FPGA) or an ASIC. A hardware module may alsoinclude programmable logic or circuitry that is temporarily configuredby software to perform certain operations. For example, a hardwaremodule may include software encompassed within a CPU or otherprogrammable processor. It will be appreciated that the decision toimplement a hardware module mechanically, in dedicated and permanentlyconfigured circuitry, or in temporarily configured circuitry (e.g.,configured by software) may be driven by cost and time considerations.

Accordingly, the phrase “hardware module” should be understood toencompass a tangible entity, and such a tangible entity may bephysically constructed, permanently configured (e.g., hardwired), ortemporarily configured (e.g., programmed) to operate in a certain manneror to perform certain operations described herein. As used herein,“hardware-implemented module” refers to a hardware module. Consideringembodiments in which hardware modules are temporarily configured (e.g.,programmed), each of the hardware modules need not be configured orinstantiated at any one instance in time. For example, where a hardwaremodule comprises a CPU configured by software to become aspecial-purpose processor, the CPU may be configured as respectivelydifferent special-purpose processors (e.g., each included in a differenthardware module) at different times. Software (e.g., a software module)may accordingly configure one or more processors, for example, toconstitute a particular hardware module at one instance of time and toconstitute a different hardware module at a different instance of time.

Hardware modules can provide information to, and receive informationfrom, other hardware modules. Accordingly, the described hardwaremodules may be regarded as being communicatively coupled. Where multiplehardware modules exist contemporaneously, communications may be achievedthrough signal transmission (e.g., over appropriate circuits and buses)between or among two or more of the hardware modules. In embodiments inwhich multiple hardware modules are configured or instantiated atdifferent times, communications between such hardware modules may beachieved, for example, through the storage and retrieval of informationin memory structures to which the multiple hardware modules have access.For example, one hardware module may perform an operation and store theoutput of that operation in a memory device to which it iscommunicatively coupled. A further hardware module may then, at a latertime, access the memory device to retrieve and process the storedoutput. Hardware modules may also initiate communications with input oroutput devices, and can operate on a resource (e.g., a collection ofinformation).

The various operations of example methods described herein may beperformed, at least partially, by one or more processors that aretemporarily configured (e.g., by software) or permanently configured toperform the relevant operations. Whether temporarily or permanentlyconfigured, such processors may constitute processor-implemented modulesthat operate to perform one or more operations or functions describedherein. Accordingly, the operations described herein may be at leastpartially processor-implemented, since a processor is an example ofhardware. For example, at least some operations of any method may beperformed by one or more processor-implemented modules. As used herein,“processor-implemented module” refers to a hardware module in which thehardware includes one or more processors. Moreover, the one or moreprocessors may also operate to support performance of the relevantoperations in a “cloud computing” environment or as a “software as aservice” (SaaS). For example, at least some of the operations may beperformed by a group of computers (as examples of machines includingprocessors), with these operations being accessible via a network (e.g.,the Internet) and via one or more appropriate interfaces (e.g., anapplication program interface (API)).

Throughout this specification, plural instances may implementcomponents, operations, or structures described as a single instance.Although individual operations of one or more methods are illustratedand described as separate operations, one or more of the individualoperations may be performed concurrently, and nothing requires that theoperations be performed in the order illustrated. Structures andfunctionality presented as separate components in example configurationsmay be implemented as a combined structure or component. Similarly,structures and functionality presented as a single component may beimplemented as separate components. These and other variations,modifications, additions, and improvements fall within the scope of thesubject matter herein.

The performance of certain operations may be distributed among the oneor more processors, whether residing only within a single machine ordeployed across a number of machines. In some example embodiments, theone or more processors or hardware modules (e.g., processor-implementedmodules) may be located in a single geographic location (e.g., within ahome environment, an office environment, or a server farm). In otherexample embodiments, the one or more processors or hardware modules maybe distributed across a number of geographic locations.

Some portions of the subject matter discussed herein may be presented interms of algorithms or symbolic representations of operations on datastored as bits or binary digital signals within a machine memory (e.g.,a computer memory). Such algorithms or symbolic representations areexamples of techniques used by those of ordinary skill in the dataprocessing arts to convey the substance of their work to others skilledin the art. As used herein, an “algorithm” is a self-consistent sequenceof operations or similar processing leading to a desired result. In thiscontext, algorithms and operations involve physical manipulation ofphysical quantities. Typically, but not necessarily, such quantities maytake the form of electrical, magnetic, or optical signals capable ofbeing stored, accessed, transferred, combined, compared, or otherwisemanipulated by a machine. It is convenient at times, principally forreasons of common usage, to refer to such signals using words such as“data,” “content,” “bits,” “values,” “elements,” “symbols,”“characters,” “terms,” “numbers,” “numerals,” or the like. These words,however, are merely convenient labels and are to be associated withappropriate physical quantities.

Unless specifically stated otherwise, discussions herein using wordssuch as “processing,” “computing,” “calculating,” “determining,”“presenting,” “displaying,” or the like may refer to actions orprocesses of a machine (e.g., a computer) that manipulates or transformsdata represented as physical (e.g., electronic, magnetic, or optical)quantities within one or more memories (e.g., volatile memory,non-volatile memory, or any suitable combination thereof), registers, orother machine components that receive, store, transmit, or displayinformation. Furthermore, unless specifically stated otherwise, theterms “a” or “an” are herein used, as is common in patent documents, toinclude one or more than one instance. Finally, as used herein, theconjunction “or” refers to a non-exclusive “or,” unless specificallystated otherwise.

What is claimed is:
 1. A method comprising: retrieving a set of searchresults, based on a search criteria that defines a parameter, the set ofsearch results representable by a set of graphical elements, eachgraphical element in the set of graphical elements corresponding to adifferent search result in the set of search results; displaying an axisintersected by a slider with a first subset of the set of graphicalelements in a graphical user interface, the axis representing a range ofvalues of the parameter, and the slider being displayed at a firstlocation along the axis, the first location of the slider at leastpartially defining a first value from the range of values of theparameter of the set of search results represented by the first subsetof the set of graphical elements, the first subset having a first sizequantified by a first count of graphical elements; detecting aninitiation of a movement of the slider away from the first locationalong the axis in the graphical user interface; responsive to theinitiation of the movement of the slider, causing display of anotification window in the graphical user interface, the notificationwindow indicating a first quantity of search results by displaying thefirst count of graphical elements, the notification window beingconfigured to follow the movement of the slider from the first locationto a second location along the axis in the graphical user interface;detecting a conclusion of the movement of the slider from the firstlocation to the second location along the axis in the graphical userinterface, the second location of the slider at least partially defininga second value from the range of values of the parameter of the set ofsearch results represented by a second subset of the set of graphicalelements, the second subset having a second size quantified by a secondcount of graphical elements; and responsive to the conclusion of themovement of the slider, causing the notification window in the graphicaluser interface to indicate a second quantity of search results bydisplaying the second count of graphical elements.
 2. The method ofclaim 1, wherein: the second subset has no graphical elements, and thesecond count of graphical elements is zero; and the method furthercomprises: responsive to the initiation of the movement of the slider,causing the notification window in the graphical user interface toindicate that there are no search results to be shown.
 3. The method ofclaim 1, wherein: the slider intersects the axis at a point that definesa threshold value of the parameter, and the method further comprises;arranging the set of graphical elements within the graphical userinterface based on values of the parameter in the search resultsrepresented by the set of graphical elements and based on the thresholdvalue defined by the point.
 4. The method of claim 1, wherein: theslider is a line segment having an end; the graphical user interface isconfigured to receive a user input to initiate the movement of theslider, and the notification window is depicted as a header flag at anoffset distance from the end of line segment; and the method furthercomprises: responsive to receiving the user input initiating themovement of the slider, causing display of the header flag at the offsetdistance from the end of the slider, the header flag being displayed atthe same offset distance from the end of the slider at the secondlocation.
 5. The method of claim 1, wherein: the set of search resultsincludes a set of parameters that have corresponding values, and thenotification window displays a value of a parameter from the set ofparameters; and the method further comprises: responsive to theinitiation of the movement of the slider, causing the notificationwindow to display the value of the parameter from the set of parameters.6. The method of claim 1, wherein: the set of search results havecorresponding price values, each search result among the set of searchresults specifying a corresponding price value; and the method furthercomprises: responsive to the initiation of the movement of the slider,causing the notification window to display a first price from a firstset of prices, wherein the first price is a lowest price among the firstset of prices; and responsive to the conclusion of the movement of theslider, causing the notification window to display a second price from asecond set of prices, wherein the second price is a lowest price amongthe second set of prices.
 7. The method of claim 1, wherein: the set ofsearch results specifies a set of airline flights represented by the setof graphical elements, wherein each airline flight among the set ofairline flights has a corresponding departure time and a correspondingarrival time, and the method further comprises; displaying the slider asa first slider with the first subset of the set of graphical elements inthe graphical user interface, the first slider indicating a thresholdtakeoff time of the first subset of the set of graphical elements; anddisplaying a second slider with the first subset of the set of graphicalelements in the graphical user interface, the second slider indicating athreshold landing time of the first subset of the set of graphicalelements.
 8. The method of claim 1, wherein: the movement of the slideris initiated by a drag input, the drag input including a first inputselecting the slider and a second input placing the slider at adestination, the first input and second input received from a clientdevice, and the method further comprises; responsive to receiving thefirst input selecting the slider, causing the notification window toappear in the graphical user interface; and responsive to receiving thesecond input placing the slider at the destination, causing thenotification window to disappear from the graphical user interface.
 9. Anon-transitory machine-readable storage medium comprising instructionsthat, when executed by one or more processors of a machine, cause themachine to perform operations comprising: by a search module comprisingone or more processors, retrieving a set of search results based on asearch criteria that defines a parameter, the set of search resultsrepresentable by a set of graphical elements, each graphical element inthe set of graphical elements corresponding to a different search resultin the set of search results; by a slider module comprising one or moreprocessors, displaying an axis intersected by a slider with a firstsubset of the set of graphical elements in a graphical user interface,the axis representing a range of values of the parameter, and the sliderbeing displayed at a first location along the axis, the first locationof the slider at least partially defining a first value from the rangeof values of the parameter of the set of search results represented bythe first subset of the set of graphical elements, the first subsethaving a first size quantified by a first count of graphical elements;by the slider module, detecting an initiation of a movement of theslider away from the first location along the axis in the graphical userinterface; by a presentation module comprising one or more processors,responsive to the initiation of the movement of the slider, causingdisplay of a notification window in the graphical user interface, thenotification window indicating a first quantity of search results bydisplaying the first count of graphical elements, the notificationwindow being configured to follow the movement of the slider from thefirst location to a second location in the graphical user interface; bythe slider module, detecting a conclusion of the movement of the sliderfrom the first location to the second location along the axis in thegraphical user interface, the second location of the slider at leastpartially defining a second value from the range of values of theparameter of the set of search results represented by a second subset ofthe set of graphical elements, the second subset having a second sizequantified by a second count of graphical elements; and by thepresentation module, responsive to the conclusion of the movement of theslider, causing the notification window in the graphical user interfaceindicate a second quantity of search results by displaying the secondcount of graphical elements.
 10. The non-transitory machine-readablestorage medium of claim 9, wherein: the second subset has no graphicalelements, and the second count of graphical elements is zero; and themethod further comprises: responsive to the initiation of the movementof the slider, causing the notification window in the graphical userinterface to indicate that there are no search results to be shown. 11.The non-transitory machine-readable storage medium of claim 9, wherein:the slider intersects the axis at a point, wherein the point defines athreshold value of the parameters, and the method further comprises;arranging the set of graphical elements within the graphical userinterface according to at least the values corresponding to theparameter of the search results represented by the set of graphicalelements and the threshold value defined by the point.
 12. Thenon-transitory machine-readable storage medium of claim 9, wherein: theslider is a line segment having an end and, the graphical user interfaceis configured to receive a user input on the line segment to initiatethe movement of the slider, and the notification window is depicted as aheader flag emerging from the line segment; and the method furthercomprises: responsive to receiving the user input initiating themovement of the slider, causing display of the header flag at an offsetrelative to the slider, the header flag having the same offset relativeto the slider at the second location.
 13. The non-transitorymachine-readable storage medium of claim 9, wherein: the set of searchresults includes a set of parameters, the set of parameters havingcorresponding values, and the notification window displays a valuecorresponding to a parameter from among the set of parameters; and themethod further comprises: responsive to the initiation of the movementof the slider, causing the notification window to display the valuecorresponding to the parameter from among the set of parameters.
 14. Thenon-transitory machine-readable medium of claim 9, wherein: the set ofsearch results have corresponding price values, each search result amongthe set of search results specifying a corresponding price value; andthe method further comprises: responsive to the initiation of themovement of the slider, causing the notification window to display afirst price from a first set of prices, wherein the first price is alowest price among the first set of prices; and responsive to theconclusion of the movement of the slider, causing the notificationwindow to display a second price from a second set of prices, whereinthe second price is a lowest price among the second set of prices. 15.The non-transitory machine-readable medium of claim 9, wherein: the setof search results specifies a set of airline flights represented by theset of graphical elements, wherein each airline flight among the set ofairline flights has a corresponding departure time and a correspondingarrival time, and the method further comprises; displaying the slider asa first slider with the first subset of the set of graphical elements inthe graphical user interface, the first slider indicating a thresholdtakeoff time of the first subset of the set of graphical elements; anddisplaying a second slider with the first subset of the set of graphicalelements in the graphical user interface, the second slider indicating athreshold landing time of the first subset of the set of graphicalelements.
 16. The non-transitory machine-readable medium of claim 9,wherein: the movement of the slider is initiated by a drag input, thedrag input including a first input selecting the slider and a secondinput placing the slider at a destination, the first input and secondinput received from a client device, and the method further comprises;responsive to receiving the first input selecting the slider, causingthe notification window to appear in the graphical user interface; andresponsive to receiving the second input placing the slider at thedestination, causing the notification window to disappear from thegraphical user interface.
 17. A system comprising: a search modulecomprising one or more processors and configured to retrieve a set ofsearch results based on a search criteria that defines a parameter, theset of search results representable by a set of graphical elements, eachgraphical element in the set of graphical elements corresponding to adifferent search result in the set of search results; a slider modulecomprising one or more processors and configured to display an axisintersected by a slider with a first subset of the set of graphicalelements in a graphical user interface, the axis representing a range ofvalues of the parameter, and the slider being displayed at a firstlocation along the axis, the first location of the slider at leastpartially defining a first value from the range of values of theparameter of the set of search results represented by the first subsetof the set of graphical elements, the first subset having a first sizequantified by a first count of graphical elements; the slider modulebeing further configured to detect an initiation of a movement of theslider away from the first location along the axis in the graphical userinterface; a presentation module comprising one or more processors andconfigured to, responsive to the initiation of the movement of theslider, cause display of a notification window in the graphical userinterface, the notification window indicating a first quantity of searchresults by displaying the first count of graphical elements, thenotification window being configured to follow the movement of theslider from the first location to a second location in the graphicaluser interface; the slider module being further configured to detect aconclusion of the movement of the slider from the first location to thesecond location along the axis in the graphical user interface, thesecond location of the slider at least partially defining a second valuefrom the range of values of the parameter of the set of search resultsrepresented by a second subset of the set of graphical elements, thesecond subset having a second size quantified by a second count ofgraphical elements; and the presentation module being further configuredto, responsive to the conclusion of the movement of the slider, causethe notification window in the graphical user interface to indicate asecond quantity of search results by displaying the second count ofgraphical elements.
 18. The system of claim 17, wherein: the secondsubset has no graphical elements, and the second count of graphicalelements is zero; and the method further comprises: responsive to theinitiation of the movement of the slider, causing the notificationwindow in the graphical user interface to indicate that there are nosearch results to be shown.
 19. The system of claim 17, wherein: theslider intersects the axis at a point, wherein the point defines athreshold value of the parameters, and the method further comprises;arranging the set of graphical elements within the graphical userinterface according to at least the values corresponding to theparameter of the search results represented by the set of graphicalelements and the threshold value defined by the point.
 20. The system ofclaim 17, wherein: the slider is a line segment having an end and, thegraphical user interface is configured to receive a user input on theline segment to initiate the movement of the slider, and thenotification window is depicted as a header flag emerging from the linesegment; and the method further comprises: responsive to receiving theuser input initiating the movement of the slider, causing display of theheader flag at an offset relative to the slider, the header flag havingthe same offset relative to the slider at the second location.